[08:58:22] [Craft Scheduler Thread - 32/WARN]: Exception in thread "Craft Scheduler Thread - 32"
[08:58:22] [Craft Scheduler Thread - 32/WARN]: org.apache.commons.lang.UnhandledException: Plugin uSkyBlock v2.2-HF4 generated an exception while executing task 11926
	at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.ConcurrentModificationException
	at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:953)
	at java.util.LinkedList$ListItr.next(LinkedList.java:886)
	at com.google.common.collect.Iterators$9.next(Iterators.java:939)
	at com.google.common.collect.Iterators.addAll(Iterators.java:357)
	at com.google.common.collect.Lists.newArrayList(Lists.java:147)
	at net.minecraft.server.v1_8_R1.UserCache.a(UserCache.java:213)
	at net.minecraft.server.v1_8_R1.UserCache.c(UserCache.java:194)
	at net.minecraft.server.v1_8_R1.UserCache.getProfile(UserCache.java:123)
	at org.bukkit.craftbukkit.v1_8_R1.CraftServer.getOfflinePlayer(CraftServer.java:1290)
	at org.bukkit.Bukkit.getOfflinePlayer(Bukkit.java:741)
	at us.talabrek.ultimateskyblock.island.IslandInfo.hasOnlineMembers(IslandInfo.java:422)
	at us.talabrek.ultimateskyblock.island.IslandLogic.renamePlayer(IslandLogic.java:243)
	at us.talabrek.ultimateskyblock.island.task.RenamePlayerTask.execute(RenamePlayerTask.java:34)
	at us.talabrek.ultimateskyblock.async.AbstractBalancedExecutor$IncrementalExecution.run(AbstractBalancedExecutor.java:100)
	at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftTask.run(CraftTask.java:71)
	at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
	... 3 more